Finding the Third Proportional to 900,258 and 1,393,518

Step by Step Solution

1. Step 1: Write the proportion equation
   900,258 : 1,393,518 = 1,393,518 : x
2. Step 2: Convert to fraction form
   900,258/1,393,518 = 1,393,518/x
3. Step 3: Cross multiply
   900,258x = 1,393,518 × 1,393,518
4. Step 4: Simplify right side
   900,258x = 1,941,892,416,324
5. Step 5: Solve for x
   x = 1,941,892,416,324/900,258
6. Step 6: Final answer
   x = 2,157,039.89