Finding the Third Proportional to 31,665,642 and 69,161,340

Step by Step Solution

1. Step 1: Write the proportion equation
   31,665,642 : 69,161,340 = 69,161,340 : x
2. Step 2: Convert to fraction form
   31,665,642/69,161,340 = 69,161,340/x
3. Step 3: Cross multiply
   31,665,642x = 69,161,340 × 69,161,340
4. Step 4: Simplify right side
   31,665,642x = 4,783,290,950,595,600
5. Step 5: Solve for x
   x = 4,783,290,950,595,600/31,665,642
6. Step 6: Final answer
   x = 151,056,181.04