Finding the Third Proportional to 56,739 and 85,353.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,739 : 85,353.50 = 85,353.50 : x
2. Step 2: Convert to fraction form
   56,739/85,353.50 = 85,353.50/x
3. Step 3: Cross multiply
   56,739x = 85,353.50 × 85,353.50
4. Step 4: Simplify right side
   56,739x = 7,285,219,962.25
5. Step 5: Solve for x
   x = 7,285,219,962.25/56,739
6. Step 6: Final answer
   x = 128,398.81