Finding the Third Proportional to 77,419.50 and 169,590

Step by Step Solution

1. Step 1: Write the proportion equation
   77,419.50 : 169,590 = 169,590 : x
2. Step 2: Convert to fraction form
   77,419.50/169,590 = 169,590/x
3. Step 3: Cross multiply
   77,419.50x = 169,590 × 169,590
4. Step 4: Simplify right side
   77,419.50x = 28,760,768,100
5. Step 5: Solve for x
   x = 28,760,768,100/77,419.50
6. Step 6: Final answer
   x = 371,492.56