Finding the Third Proportional to 1,505,490 and 2,146,128

Step by Step Solution

1. Step 1: Write the proportion equation
   1,505,490 : 2,146,128 = 2,146,128 : x
2. Step 2: Convert to fraction form
   1,505,490/2,146,128 = 2,146,128/x
3. Step 3: Cross multiply
   1,505,490x = 2,146,128 × 2,146,128
4. Step 4: Simplify right side
   1,505,490x = 4,605,865,392,384
5. Step 5: Solve for x
   x = 4,605,865,392,384/1,505,490
6. Step 6: Final answer
   x = 3,059,379.60