Finding the Third Proportional to 328,968 and 717,430.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,968 : 717,430.50 = 717,430.50 : x
2. Step 2: Convert to fraction form
   328,968/717,430.50 = 717,430.50/x
3. Step 3: Cross multiply
   328,968x = 717,430.50 × 717,430.50
4. Step 4: Simplify right side
   328,968x = 514,706,522,330.25
5. Step 5: Solve for x
   x = 514,706,522,330.25/328,968
6. Step 6: Final answer
   x = 1,564,609.70