Finding the Third Proportional to 176,671.50 and 386,988

Step by Step Solution

1. Step 1: Write the proportion equation
   176,671.50 : 386,988 = 386,988 : x
2. Step 2: Convert to fraction form
   176,671.50/386,988 = 386,988/x
3. Step 3: Cross multiply
   176,671.50x = 386,988 × 386,988
4. Step 4: Simplify right side
   176,671.50x = 149,759,712,144
5. Step 5: Solve for x
   x = 149,759,712,144/176,671.50
6. Step 6: Final answer
   x = 847,673.29