Finding the Third Proportional to 31,931,320.92 and 69,907,779.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,931,320.92 : 69,907,779.42 = 69,907,779.42 : x
2. Step 2: Convert to fraction form
   31,931,320.92/69,907,779.42 = 69,907,779.42/x
3. Step 3: Cross multiply
   31,931,320.92x = 69,907,779.42 × 69,907,779.42
4. Step 4: Simplify right side
   31,931,320.92x = 4,887,097,623,697,530
5. Step 5: Solve for x
   x = 4,887,097,623,697,530/31,931,320.92
6. Step 6: Final answer
   x = 153,050,280.50