Finding the Third Proportional to 56,819.81 and 84,130.31

Step by Step Solution

1. Step 1: Write the proportion equation
   56,819.81 : 84,130.31 = 84,130.31 : x
2. Step 2: Convert to fraction form
   56,819.81/84,130.31 = 84,130.31/x
3. Step 3: Cross multiply
   56,819.81x = 84,130.31 × 84,130.31
4. Step 4: Simplify right side
   56,819.81x = 7,077,909,481.35
5. Step 5: Solve for x
   x = 7,077,909,481.35/56,819.81
6. Step 6: Final answer
   x = 124,567.63