Finding the Third Proportional to 280,152 and 420,514.88

Step by Step Solution

1. Step 1: Write the proportion equation
   280,152 : 420,514.88 = 420,514.88 : x
2. Step 2: Convert to fraction form
   280,152/420,514.88 = 420,514.88/x
3. Step 3: Cross multiply
   280,152x = 420,514.88 × 420,514.88
4. Step 4: Simplify right side
   280,152x = 176,832,760,096.27
5. Step 5: Solve for x
   x = 176,832,760,096.27/280,152
6. Step 6: Final answer
   x = 631,202.92