Finding the Third Proportional to 338,870 and 730,225

Step by Step Solution

1. Step 1: Write the proportion equation
   338,870 : 730,225 = 730,225 : x
2. Step 2: Convert to fraction form
   338,870/730,225 = 730,225/x
3. Step 3: Cross multiply
   338,870x = 730,225 × 730,225
4. Step 4: Simplify right side
   338,870x = 533,228,550,625
5. Step 5: Solve for x
   x = 533,228,550,625/338,870
6. Step 6: Final answer
   x = 1,573,549.00