Finding the Third Proportional to 28,978.88 and 61,511.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,978.88 : 61,511.50 = 61,511.50 : x
2. Step 2: Convert to fraction form
   28,978.88/61,511.50 = 61,511.50/x
3. Step 3: Cross multiply
   28,978.88x = 61,511.50 × 61,511.50
4. Step 4: Simplify right side
   28,978.88x = 3,783,664,632.25
5. Step 5: Solve for x
   x = 3,783,664,632.25/28,978.88
6. Step 6: Final answer
   x = 130,566.31