Finding the Third Proportional to 53,931.13 and 84,417.63

Step by Step Solution

1. Step 1: Write the proportion equation
   53,931.13 : 84,417.63 = 84,417.63 : x
2. Step 2: Convert to fraction form
   53,931.13/84,417.63 = 84,417.63/x
3. Step 3: Cross multiply
   53,931.13x = 84,417.63 × 84,417.63
4. Step 4: Simplify right side
   53,931.13x = 7,126,335,410.64
5. Step 5: Solve for x
   x = 7,126,335,410.64/53,931.13
6. Step 6: Final answer
   x = 132,137.71