Finding the Third Proportional to 1,311,276 and 1,976,148

Step by Step Solution

1. Step 1: Write the proportion equation
   1,311,276 : 1,976,148 = 1,976,148 : x
2. Step 2: Convert to fraction form
   1,311,276/1,976,148 = 1,976,148/x
3. Step 3: Cross multiply
   1,311,276x = 1,976,148 × 1,976,148
4. Step 4: Simplify right side
   1,311,276x = 3,905,160,917,904
5. Step 5: Solve for x
   x = 3,905,160,917,904/1,311,276
6. Step 6: Final answer
   x = 2,978,138.03