Finding the Third Proportional to 31,931,330 and 69,907,798

Step by Step Solution

1. Step 1: Write the proportion equation
   31,931,330 : 69,907,798 = 69,907,798 : x
2. Step 2: Convert to fraction form
   31,931,330/69,907,798 = 69,907,798/x
3. Step 3: Cross multiply
   31,931,330x = 69,907,798 × 69,907,798
4. Step 4: Simplify right side
   31,931,330x = 4,887,100,221,208,804
5. Step 5: Solve for x
   x = 4,887,100,221,208,804/31,931,330
6. Step 6: Final answer
   x = 153,050,318.33