Finding the Third Proportional to 28,356.75 and 60,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,356.75 : 60,439.50 = 60,439.50 : x
2. Step 2: Convert to fraction form
   28,356.75/60,439.50 = 60,439.50/x
3. Step 3: Cross multiply
   28,356.75x = 60,439.50 × 60,439.50
4. Step 4: Simplify right side
   28,356.75x = 3,652,933,160.25
5. Step 5: Solve for x
   x = 3,652,933,160.25/28,356.75
6. Step 6: Final answer
   x = 128,820.59