Finding the Third Proportional to 991,240 and 2,110,352

Step by Step Solution

1. Step 1: Write the proportion equation
   991,240 : 2,110,352 = 2,110,352 : x
2. Step 2: Convert to fraction form
   991,240/2,110,352 = 2,110,352/x
3. Step 3: Cross multiply
   991,240x = 2,110,352 × 2,110,352
4. Step 4: Simplify right side
   991,240x = 4,453,585,563,904
5. Step 5: Solve for x
   x = 4,453,585,563,904/991,240
6. Step 6: Final answer
   x = 4,492,943.75