Finding the Third Proportional to 77,238.50 and 169,240

Step by Step Solution

1. Step 1: Write the proportion equation
   77,238.50 : 169,240 = 169,240 : x
2. Step 2: Convert to fraction form
   77,238.50/169,240 = 169,240/x
3. Step 3: Cross multiply
   77,238.50x = 169,240 × 169,240
4. Step 4: Simplify right side
   77,238.50x = 28,642,177,600
5. Step 5: Solve for x
   x = 28,642,177,600/77,238.50
6. Step 6: Final answer
   x = 370,827.73