Finding the Third Proportional to 356,610,493.50 and 776,529,919.50

Step by Step Solution

1. Step 1: Write the proportion equation
   356,610,493.50 : 776,529,919.50 = 776,529,919.50 : x
2. Step 2: Convert to fraction form
   356,610,493.50/776,529,919.50 = 776,529,919.50/x
3. Step 3: Cross multiply
   356,610,493.50x = 776,529,919.50 × 776,529,919.50
4. Step 4: Simplify right side
   356,610,493.50x = 602,998,715,878,676,480
5. Step 5: Solve for x
   x = 602,998,715,878,676,480/356,610,493.50
6. Step 6: Final answer
   x = 1,690,916,915.99