Finding the Third Proportional to 49,279.50 and 77,215.50

Step by Step Solution

1. Step 1: Write the proportion equation
   49,279.50 : 77,215.50 = 77,215.50 : x
2. Step 2: Convert to fraction form
   49,279.50/77,215.50 = 77,215.50/x
3. Step 3: Cross multiply
   49,279.50x = 77,215.50 × 77,215.50
4. Step 4: Simplify right side
   49,279.50x = 5,962,233,440.25
5. Step 5: Solve for x
   x = 5,962,233,440.25/49,279.50
6. Step 6: Final answer
   x = 120,988.11