Finding the Third Proportional to 28,998.75 and 61,108.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,998.75 : 61,108.50 = 61,108.50 : x
2. Step 2: Convert to fraction form
   28,998.75/61,108.50 = 61,108.50/x
3. Step 3: Cross multiply
   28,998.75x = 61,108.50 × 61,108.50
4. Step 4: Simplify right side
   28,998.75x = 3,734,248,772.25
5. Step 5: Solve for x
   x = 3,734,248,772.25/28,998.75
6. Step 6: Final answer
   x = 128,772.75