Finding the Third Proportional to 1,009,776 and 2,161,400

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,776 : 2,161,400 = 2,161,400 : x
2. Step 2: Convert to fraction form
   1,009,776/2,161,400 = 2,161,400/x
3. Step 3: Cross multiply
   1,009,776x = 2,161,400 × 2,161,400
4. Step 4: Simplify right side
   1,009,776x = 4,671,649,960,000
5. Step 5: Solve for x
   x = 4,671,649,960,000/1,009,776
6. Step 6: Final answer
   x = 4,626,422.06