Finding the Third Proportional to 56,740 and 85,354.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,740 : 85,354.50 = 85,354.50 : x
2. Step 2: Convert to fraction form
   56,740/85,354.50 = 85,354.50/x
3. Step 3: Cross multiply
   56,740x = 85,354.50 × 85,354.50
4. Step 4: Simplify right side
   56,740x = 7,285,390,670.25
5. Step 5: Solve for x
   x = 7,285,390,670.25/56,740
6. Step 6: Final answer
   x = 128,399.55