Finding the Third Proportional to 1,659,138 and 2,638,146

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659,138 : 2,638,146 = 2,638,146 : x
2. Step 2: Convert to fraction form
   1,659,138/2,638,146 = 2,638,146/x
3. Step 3: Cross multiply
   1,659,138x = 2,638,146 × 2,638,146
4. Step 4: Simplify right side
   1,659,138x = 6,959,814,317,316
5. Step 5: Solve for x
   x = 6,959,814,317,316/1,659,138
6. Step 6: Final answer
   x = 4,194,837.51