Finding the Third Proportional to 909,459 and 1,980,380

Step by Step Solution

1. Step 1: Write the proportion equation
   909,459 : 1,980,380 = 1,980,380 : x
2. Step 2: Convert to fraction form
   909,459/1,980,380 = 1,980,380/x
3. Step 3: Cross multiply
   909,459x = 1,980,380 × 1,980,380
4. Step 4: Simplify right side
   909,459x = 3,921,904,944,400
5. Step 5: Solve for x
   x = 3,921,904,944,400/909,459
6. Step 6: Final answer
   x = 4,312,349.37