Finding the Third Proportional to 643,336,912.50 and 1,404,654,544.50

Step by Step Solution

1. Step 1: Write the proportion equation
   643,336,912.50 : 1,404,654,544.50 = 1,404,654,544.50 : x
2. Step 2: Convert to fraction form
   643,336,912.50/1,404,654,544.50 = 1,404,654,544.50/x
3. Step 3: Cross multiply
   643,336,912.50x = 1,404,654,544.50 × 1,404,654,544.50
4. Step 4: Simplify right side
   643,336,912.50x = 1,973,054,389,384,502,528
5. Step 5: Solve for x
   x = 1,973,054,389,384,502,528/643,336,912.50
6. Step 6: Final answer
   x = 3,066,906,858.67