Finding the Third Proportional to 58,503.50 and 86,894.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,503.50 : 86,894.50 = 86,894.50 : x
2. Step 2: Convert to fraction form
   58,503.50/86,894.50 = 86,894.50/x
3. Step 3: Cross multiply
   58,503.50x = 86,894.50 × 86,894.50
4. Step 4: Simplify right side
   58,503.50x = 7,550,654,130.25
5. Step 5: Solve for x
   x = 7,550,654,130.25/58,503.50
6. Step 6: Final answer
   x = 129,063.29