Finding the Third Proportional to 48,980.25 and 78,207.75

Step by Step Solution

1. Step 1: Write the proportion equation
   48,980.25 : 78,207.75 = 78,207.75 : x
2. Step 2: Convert to fraction form
   48,980.25/78,207.75 = 78,207.75/x
3. Step 3: Cross multiply
   48,980.25x = 78,207.75 × 78,207.75
4. Step 4: Simplify right side
   48,980.25x = 6,116,452,160.06
5. Step 5: Solve for x
   x = 6,116,452,160.06/48,980.25
6. Step 6: Final answer
   x = 124,875.89