Finding the Third Proportional to 78,901.50 and 110,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,901.50 : 110,980.50 = 110,980.50 : x
2. Step 2: Convert to fraction form
   78,901.50/110,980.50 = 110,980.50/x
3. Step 3: Cross multiply
   78,901.50x = 110,980.50 × 110,980.50
4. Step 4: Simplify right side
   78,901.50x = 12,316,671,380.25
5. Step 5: Solve for x
   x = 12,316,671,380.25/78,901.50
6. Step 6: Final answer
   x = 156,101.87