Finding the Third Proportional to 1,200,940 and 2,638,072

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,940 : 2,638,072 = 2,638,072 : x
2. Step 2: Convert to fraction form
   1,200,940/2,638,072 = 2,638,072/x
3. Step 3: Cross multiply
   1,200,940x = 2,638,072 × 2,638,072
4. Step 4: Simplify right side
   1,200,940x = 6,959,423,877,184
5. Step 5: Solve for x
   x = 6,959,423,877,184/1,200,940
6. Step 6: Final answer
   x = 5,794,980.50