Finding the Third Proportional to 59,124.50 and 136,734.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,124.50 : 136,734.50 = 136,734.50 : x
2. Step 2: Convert to fraction form
   59,124.50/136,734.50 = 136,734.50/x
3. Step 3: Cross multiply
   59,124.50x = 136,734.50 × 136,734.50
4. Step 4: Simplify right side
   59,124.50x = 18,696,323,490.25
5. Step 5: Solve for x
   x = 18,696,323,490.25/59,124.50
6. Step 6: Final answer
   x = 316,219.56