Finding the Third Proportional to 31,465.89 and 68,409.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,465.89 : 68,409.96 = 68,409.96 : x
2. Step 2: Convert to fraction form
   31,465.89/68,409.96 = 68,409.96/x
3. Step 3: Cross multiply
   31,465.89x = 68,409.96 × 68,409.96
4. Step 4: Simplify right side
   31,465.89x = 4,679,922,354.63
5. Step 5: Solve for x
   x = 4,679,922,354.63/31,465.89
6. Step 6: Final answer
   x = 148,730.02