Finding the Third Proportional to 1,372,586 and 1,980,123

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372,586 : 1,980,123 = 1,980,123 : x
2. Step 2: Convert to fraction form
   1,372,586/1,980,123 = 1,980,123/x
3. Step 3: Cross multiply
   1,372,586x = 1,980,123 × 1,980,123
4. Step 4: Simplify right side
   1,372,586x = 3,920,887,095,129
5. Step 5: Solve for x
   x = 3,920,887,095,129/1,372,586
6. Step 6: Final answer
   x = 2,856,569.35