Finding the Third Proportional to 1,392,196 and 2,215,276

Step by Step Solution

1. Step 1: Write the proportion equation
   1,392,196 : 2,215,276 = 2,215,276 : x
2. Step 2: Convert to fraction form
   1,392,196/2,215,276 = 2,215,276/x
3. Step 3: Cross multiply
   1,392,196x = 2,215,276 × 2,215,276
4. Step 4: Simplify right side
   1,392,196x = 4,907,447,756,176
5. Step 5: Solve for x
   x = 4,907,447,756,176/1,392,196
6. Step 6: Final answer
   x = 3,524,969.01