Finding the Third Proportional to 78,132 and 168,432

Step by Step Solution

1. Step 1: Write the proportion equation
   78,132 : 168,432 = 168,432 : x
2. Step 2: Convert to fraction form
   78,132/168,432 = 168,432/x
3. Step 3: Cross multiply
   78,132x = 168,432 × 168,432
4. Step 4: Simplify right side
   78,132x = 28,369,338,624
5. Step 5: Solve for x
   x = 28,369,338,624/78,132
6. Step 6: Final answer
   x = 363,095.00