Finding the Third Proportional to 71,558 and 105,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,558 : 105,147.50 = 105,147.50 : x
2. Step 2: Convert to fraction form
   71,558/105,147.50 = 105,147.50/x
3. Step 3: Cross multiply
   71,558x = 105,147.50 × 105,147.50
4. Step 4: Simplify right side
   71,558x = 11,055,996,756.25
5. Step 5: Solve for x
   x = 11,055,996,756.25/71,558
6. Step 6: Final answer
   x = 154,503.99