Finding the Third Proportional to 176,341.50 and 385,488

Step by Step Solution

1. Step 1: Write the proportion equation
   176,341.50 : 385,488 = 385,488 : x
2. Step 2: Convert to fraction form
   176,341.50/385,488 = 385,488/x
3. Step 3: Cross multiply
   176,341.50x = 385,488 × 385,488
4. Step 4: Simplify right side
   176,341.50x = 148,600,998,144
5. Step 5: Solve for x
   x = 148,600,998,144/176,341.50
6. Step 6: Final answer
   x = 842,688.75