Finding the Third Proportional to 1,418,276 and 2,128,865

Step by Step Solution

1. Step 1: Write the proportion equation
   1,418,276 : 2,128,865 = 2,128,865 : x
2. Step 2: Convert to fraction form
   1,418,276/2,128,865 = 2,128,865/x
3. Step 3: Cross multiply
   1,418,276x = 2,128,865 × 2,128,865
4. Step 4: Simplify right side
   1,418,276x = 4,532,066,188,225
5. Step 5: Solve for x
   x = 4,532,066,188,225/1,418,276
6. Step 6: Final answer
   x = 3,195,475.48