Finding the Third Proportional to 322,406,710.50 and 699,551,839.50

Step by Step Solution

1. Step 1: Write the proportion equation
   322,406,710.50 : 699,551,839.50 = 699,551,839.50 : x
2. Step 2: Convert to fraction form
   322,406,710.50/699,551,839.50 = 699,551,839.50/x
3. Step 3: Cross multiply
   322,406,710.50x = 699,551,839.50 × 699,551,839.50
4. Step 4: Simplify right side
   322,406,710.50x = 489,372,776,147,833,792
5. Step 5: Solve for x
   x = 489,372,776,147,833,792/322,406,710.50
6. Step 6: Final answer
   x = 1,517,874,039.87