Finding the Third Proportional to 56,853 and 85,279.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,853 : 85,279.50 = 85,279.50 : x
2. Step 2: Convert to fraction form
   56,853/85,279.50 = 85,279.50/x
3. Step 3: Cross multiply
   56,853x = 85,279.50 × 85,279.50
4. Step 4: Simplify right side
   56,853x = 7,272,593,120.25
5. Step 5: Solve for x
   x = 7,272,593,120.25/56,853
6. Step 6: Final answer
   x = 127,919.25