Finding the Third Proportional to 1,392,003 and 2,117,169

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,003 : 2,117,169 = 2,117,169 : x
2. Step 2: Convert to fraction form
   1,392,003/2,117,169 = 2,117,169/x
3. Step 3: Cross multiply
   1,392,003x = 2,117,169 × 2,117,169
4. Step 4: Simplify right side
   1,392,003x = 4,482,404,574,561
5. Step 5: Solve for x
   x = 4,482,404,574,561/1,392,003
6. Step 6: Final answer
   x = 3,220,111.29