Finding the Third Proportional to 320,292 and 491,141.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,292 : 491,141.50 = 491,141.50 : x
2. Step 2: Convert to fraction form
   320,292/491,141.50 = 491,141.50/x
3. Step 3: Cross multiply
   320,292x = 491,141.50 × 491,141.50
4. Step 4: Simplify right side
   320,292x = 241,219,973,022.25
5. Step 5: Solve for x
   x = 241,219,973,022.25/320,292
6. Step 6: Final answer
   x = 753,125.19