Finding the Third Proportional to 31,563,129 and 67,920,159

Step by Step Solution

1. Step 1: Write the proportion equation
   31,563,129 : 67,920,159 = 67,920,159 : x
2. Step 2: Convert to fraction form
   31,563,129/67,920,159 = 67,920,159/x
3. Step 3: Cross multiply
   31,563,129x = 67,920,159 × 67,920,159
4. Step 4: Simplify right side
   31,563,129x = 4,613,147,998,585,281
5. Step 5: Solve for x
   x = 4,613,147,998,585,281/31,563,129
6. Step 6: Final answer
   x = 146,156,231.80