Finding the Third Proportional to 998,406 and 2,154,276

Step by Step Solution

1. Step 1: Write the proportion equation
   998,406 : 2,154,276 = 2,154,276 : x
2. Step 2: Convert to fraction form
   998,406/2,154,276 = 2,154,276/x
3. Step 3: Cross multiply
   998,406x = 2,154,276 × 2,154,276
4. Step 4: Simplify right side
   998,406x = 4,640,905,084,176
5. Step 5: Solve for x
   x = 4,640,905,084,176/998,406
6. Step 6: Final answer
   x = 4,648,314.50