Finding the Third Proportional to 158,712 and 216,132

Step by Step Solution

1. Step 1: Write the proportion equation
   158,712 : 216,132 = 216,132 : x
2. Step 2: Convert to fraction form
   158,712/216,132 = 216,132/x
3. Step 3: Cross multiply
   158,712x = 216,132 × 216,132
4. Step 4: Simplify right side
   158,712x = 46,713,041,424
5. Step 5: Solve for x
   x = 46,713,041,424/158,712
6. Step 6: Final answer
   x = 294,325.83