Finding the Third Proportional to 168,192 and 280,307.25

Step by Step Solution

1. Step 1: Write the proportion equation
   168,192 : 280,307.25 = 280,307.25 : x
2. Step 2: Convert to fraction form
   168,192/280,307.25 = 280,307.25/x
3. Step 3: Cross multiply
   168,192x = 280,307.25 × 280,307.25
4. Step 4: Simplify right side
   168,192x = 78,572,154,402.56
5. Step 5: Solve for x
   x = 78,572,154,402.56/168,192
6. Step 6: Final answer
   x = 467,157.50