Finding the Third Proportional to 53,421.75 and 79,309.13

Step by Step Solution

1. Step 1: Write the proportion equation
   53,421.75 : 79,309.13 = 79,309.13 : x
2. Step 2: Convert to fraction form
   53,421.75/79,309.13 = 79,309.13/x
3. Step 3: Cross multiply
   53,421.75x = 79,309.13 × 79,309.13
4. Step 4: Simplify right side
   53,421.75x = 6,289,937,308.27
5. Step 5: Solve for x
   x = 6,289,937,308.27/53,421.75
6. Step 6: Final answer
   x = 117,741.13