Finding the Third Proportional to 31,885.31 and 69,513.19

Step by Step Solution

1. Step 1: Write the proportion equation
   31,885.31 : 69,513.19 = 69,513.19 : x
2. Step 2: Convert to fraction form
   31,885.31/69,513.19 = 69,513.19/x
3. Step 3: Cross multiply
   31,885.31x = 69,513.19 × 69,513.19
4. Step 4: Simplify right side
   31,885.31x = 4,832,083,236.41
5. Step 5: Solve for x
   x = 4,832,083,236.41/31,885.31
6. Step 6: Final answer
   x = 151,545.74