Finding the Third Proportional to 63,374.50 and 128,499.50

Step by Step Solution

1. Step 1: Write the proportion equation
   63,374.50 : 128,499.50 = 128,499.50 : x
2. Step 2: Convert to fraction form
   63,374.50/128,499.50 = 128,499.50/x
3. Step 3: Cross multiply
   63,374.50x = 128,499.50 × 128,499.50
4. Step 4: Simplify right side
   63,374.50x = 16,512,121,500.25
5. Step 5: Solve for x
   x = 16,512,121,500.25/63,374.50
6. Step 6: Final answer
   x = 260,548.35