Finding the Third Proportional to 176,328 and 272,434.50

Step by Step Solution

1. Step 1: Write the proportion equation
   176,328 : 272,434.50 = 272,434.50 : x
2. Step 2: Convert to fraction form
   176,328/272,434.50 = 272,434.50/x
3. Step 3: Cross multiply
   176,328x = 272,434.50 × 272,434.50
4. Step 4: Simplify right side
   176,328x = 74,220,556,790.25
5. Step 5: Solve for x
   x = 74,220,556,790.25/176,328
6. Step 6: Final answer
   x = 420,923.26