Finding the Third Proportional to 365,072,221,338 and 780,385,816,308

Step by Step Solution

1. Step 1: Write the proportion equation
   365,072,221,338 : 780,385,816,308 = 780,385,816,308 : x
2. Step 2: Convert to fraction form
   365,072,221,338/780,385,816,308 = 780,385,816,308/x
3. Step 3: Cross multiply
   365,072,221,338x = 780,385,816,308 × 780,385,816,308
4. Step 4: Simplify right side
   365,072,221,338x = 609,002,022,294,703,568,846,848
5. Step 5: Solve for x
   x = 609,002,022,294,703,568,846,848/365,072,221,338
6. Step 6: Final answer
   x = 1,668,168,616,233.51