Finding the Third Proportional to 1,379,465 and 2,128,244

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379,465 : 2,128,244 = 2,128,244 : x
2. Step 2: Convert to fraction form
   1,379,465/2,128,244 = 2,128,244/x
3. Step 3: Cross multiply
   1,379,465x = 2,128,244 × 2,128,244
4. Step 4: Simplify right side
   1,379,465x = 4,529,422,523,536
5. Step 5: Solve for x
   x = 4,529,422,523,536/1,379,465
6. Step 6: Final answer
   x = 3,283,463.17