Finding the Third Proportional to 498,218 and 793,140

Step by Step Solution

1. Step 1: Write the proportion equation
   498,218 : 793,140 = 793,140 : x
2. Step 2: Convert to fraction form
   498,218/793,140 = 793,140/x
3. Step 3: Cross multiply
   498,218x = 793,140 × 793,140
4. Step 4: Simplify right side
   498,218x = 629,071,059,600
5. Step 5: Solve for x
   x = 629,071,059,600/498,218
6. Step 6: Final answer
   x = 1,262,642.18