Finding the Third Proportional to 710,112.50 and 998,820.50

Step by Step Solution

1. Step 1: Write the proportion equation
   710,112.50 : 998,820.50 = 998,820.50 : x
2. Step 2: Convert to fraction form
   710,112.50/998,820.50 = 998,820.50/x
3. Step 3: Cross multiply
   710,112.50x = 998,820.50 × 998,820.50
4. Step 4: Simplify right side
   710,112.50x = 997,642,391,220.25
5. Step 5: Solve for x
   x = 997,642,391,220.25/710,112.50
6. Step 6: Final answer
   x = 1,404,907.52