Finding the Third Proportional to 31,272.96 and 68,782.29

Step by Step Solution

1. Step 1: Write the proportion equation
   31,272.96 : 68,782.29 = 68,782.29 : x
2. Step 2: Convert to fraction form
   31,272.96/68,782.29 = 68,782.29/x
3. Step 3: Cross multiply
   31,272.96x = 68,782.29 × 68,782.29
4. Step 4: Simplify right side
   31,272.96x = 4,731,003,288.68
5. Step 5: Solve for x
   x = 4,731,003,288.68/31,272.96
6. Step 6: Final answer
   x = 151,280.95