Finding the Third Proportional to 56,216.50 and 84,020.75

Step by Step Solution

1. Step 1: Write the proportion equation
   56,216.50 : 84,020.75 = 84,020.75 : x
2. Step 2: Convert to fraction form
   56,216.50/84,020.75 = 84,020.75/x
3. Step 3: Cross multiply
   56,216.50x = 84,020.75 × 84,020.75
4. Step 4: Simplify right side
   56,216.50x = 7,059,486,430.56
5. Step 5: Solve for x
   x = 7,059,486,430.56/56,216.50
6. Step 6: Final answer
   x = 125,576.77