Finding the Third Proportional to 1,005,400 and 2,191,436

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005,400 : 2,191,436 = 2,191,436 : x
2. Step 2: Convert to fraction form
   1,005,400/2,191,436 = 2,191,436/x
3. Step 3: Cross multiply
   1,005,400x = 2,191,436 × 2,191,436
4. Step 4: Simplify right side
   1,005,400x = 4,802,391,742,096
5. Step 5: Solve for x
   x = 4,802,391,742,096/1,005,400
6. Step 6: Final answer
   x = 4,776,598.11