Finding the Third Proportional to 19,778,400 and 41,072,664

Step by Step Solution

1. Step 1: Write the proportion equation
   19,778,400 : 41,072,664 = 41,072,664 : x
2. Step 2: Convert to fraction form
   19,778,400/41,072,664 = 41,072,664/x
3. Step 3: Cross multiply
   19,778,400x = 41,072,664 × 41,072,664
4. Step 4: Simplify right side
   19,778,400x = 1,686,963,728,056,896
5. Step 5: Solve for x
   x = 1,686,963,728,056,896/19,778,400
6. Step 6: Final answer
   x = 85,293,235.45