Finding the Third Proportional to 31,900,640 and 69,977,312

Step by Step Solution

1. Step 1: Write the proportion equation
   31,900,640 : 69,977,312 = 69,977,312 : x
2. Step 2: Convert to fraction form
   31,900,640/69,977,312 = 69,977,312/x
3. Step 3: Cross multiply
   31,900,640x = 69,977,312 × 69,977,312
4. Step 4: Simplify right side
   31,900,640x = 4,896,824,194,745,344
5. Step 5: Solve for x
   x = 4,896,824,194,745,344/31,900,640
6. Step 6: Final answer
   x = 153,502,380.98