Finding the Third Proportional to 1,691,280 and 2,620,512

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691,280 : 2,620,512 = 2,620,512 : x
2. Step 2: Convert to fraction form
   1,691,280/2,620,512 = 2,620,512/x
3. Step 3: Cross multiply
   1,691,280x = 2,620,512 × 2,620,512
4. Step 4: Simplify right side
   1,691,280x = 6,867,083,142,144
5. Step 5: Solve for x
   x = 6,867,083,142,144/1,691,280
6. Step 6: Final answer
   x = 4,060,287.56