Finding the Third Proportional to 1,005,402 and 2,191,440

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005,402 : 2,191,440 = 2,191,440 : x
2. Step 2: Convert to fraction form
   1,005,402/2,191,440 = 2,191,440/x
3. Step 3: Cross multiply
   1,005,402x = 2,191,440 × 2,191,440
4. Step 4: Simplify right side
   1,005,402x = 4,802,409,273,600
5. Step 5: Solve for x
   x = 4,802,409,273,600/1,005,402
6. Step 6: Final answer
   x = 4,776,606.05