Finding the Third Proportional to 31,930.88 and 69,386.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,930.88 : 69,386.63 = 69,386.63 : x
2. Step 2: Convert to fraction form
   31,930.88/69,386.63 = 69,386.63/x
3. Step 3: Cross multiply
   31,930.88x = 69,386.63 × 69,386.63
4. Step 4: Simplify right side
   31,930.88x = 4,814,503,728.89
5. Step 5: Solve for x
   x = 4,814,503,728.89/31,930.88
6. Step 6: Final answer
   x = 150,778.95