Finding the Third Proportional to 53,358.75 and 79,897.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,358.75 : 79,897.50 = 79,897.50 : x
2. Step 2: Convert to fraction form
   53,358.75/79,897.50 = 79,897.50/x
3. Step 3: Cross multiply
   53,358.75x = 79,897.50 × 79,897.50
4. Step 4: Simplify right side
   53,358.75x = 6,383,610,506.25
5. Step 5: Solve for x
   x = 6,383,610,506.25/53,358.75
6. Step 6: Final answer
   x = 119,635.68