Finding the Third Proportional to 350,920,379 and 760,356,942.50

Step by Step Solution

1. Step 1: Write the proportion equation
   350,920,379 : 760,356,942.50 = 760,356,942.50 : x
2. Step 2: Convert to fraction form
   350,920,379/760,356,942.50 = 760,356,942.50/x
3. Step 3: Cross multiply
   350,920,379x = 760,356,942.50 × 760,356,942.50
4. Step 4: Simplify right side
   350,920,379x = 578,142,680,007,948,288
5. Step 5: Solve for x
   x = 578,142,680,007,948,288/350,920,379
6. Step 6: Final answer
   x = 1,647,503,863.00