Finding the Third Proportional to 643,338,472.50 and 1,404,657,396

Step by Step Solution

1. Step 1: Write the proportion equation
   643,338,472.50 : 1,404,657,396 = 1,404,657,396 : x
2. Step 2: Convert to fraction form
   643,338,472.50/1,404,657,396 = 1,404,657,396/x
3. Step 3: Cross multiply
   643,338,472.50x = 1,404,657,396 × 1,404,657,396
4. Step 4: Simplify right side
   643,338,472.50x = 1,973,062,400,137,500,928
5. Step 5: Solve for x
   x = 1,973,062,400,137,500,928/643,338,472.50
6. Step 6: Final answer
   x = 3,066,911,873.73