Finding the Third Proportional to 202,215,018 and 435,578,380

Step by Step Solution

1. Step 1: Write the proportion equation
   202,215,018 : 435,578,380 = 435,578,380 : x
2. Step 2: Convert to fraction form
   202,215,018/435,578,380 = 435,578,380/x
3. Step 3: Cross multiply
   202,215,018x = 435,578,380 × 435,578,380
4. Step 4: Simplify right side
   202,215,018x = 189,728,525,123,424,384
5. Step 5: Solve for x
   x = 189,728,525,123,424,384/202,215,018
6. Step 6: Final answer
   x = 938,251,406.84