Finding the Third Proportional to 111,570 and 169,972.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,570 : 169,972.50 = 169,972.50 : x
2. Step 2: Convert to fraction form
   111,570/169,972.50 = 169,972.50/x
3. Step 3: Cross multiply
   111,570x = 169,972.50 × 169,972.50
4. Step 4: Simplify right side
   111,570x = 28,890,650,756.25
5. Step 5: Solve for x
   x = 28,890,650,756.25/111,570
6. Step 6: Final answer
   x = 258,946.41