Finding the Third Proportional to 358,402.50 and 782,010

Step by Step Solution

1. Step 1: Write the proportion equation
   358,402.50 : 782,010 = 782,010 : x
2. Step 2: Convert to fraction form
   358,402.50/782,010 = 782,010/x
3. Step 3: Cross multiply
   358,402.50x = 782,010 × 782,010
4. Step 4: Simplify right side
   358,402.50x = 611,539,640,100
5. Step 5: Solve for x
   x = 611,539,640,100/358,402.50
6. Step 6: Final answer
   x = 1,706,292.90