Finding the Third Proportional to 31,186.13 and 68,352.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,186.13 : 68,352.19 = 68,352.19 : x
2. Step 2: Convert to fraction form
   31,186.13/68,352.19 = 68,352.19/x
3. Step 3: Cross multiply
   31,186.13x = 68,352.19 × 68,352.19
4. Step 4: Simplify right side
   31,186.13x = 4,672,021,536.04
5. Step 5: Solve for x
   x = 4,672,021,536.04/31,186.13
6. Step 6: Final answer
   x = 149,810.90