Finding the Third Proportional to 177,788,870 and 267,156,638

Step by Step Solution

1. Step 1: Write the proportion equation
   177,788,870 : 267,156,638 = 267,156,638 : x
2. Step 2: Convert to fraction form
   177,788,870/267,156,638 = 267,156,638/x
3. Step 3: Cross multiply
   177,788,870x = 267,156,638 × 267,156,638
4. Step 4: Simplify right side
   177,788,870x = 71,372,669,227,463,040
5. Step 5: Solve for x
   x = 71,372,669,227,463,040/177,788,870
6. Step 6: Final answer
   x = 401,446,216.67