Finding the Third Proportional to 1,272,176 and 1,783,120

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272,176 : 1,783,120 = 1,783,120 : x
2. Step 2: Convert to fraction form
   1,272,176/1,783,120 = 1,783,120/x
3. Step 3: Cross multiply
   1,272,176x = 1,783,120 × 1,783,120
4. Step 4: Simplify right side
   1,272,176x = 3,179,516,934,400
5. Step 5: Solve for x
   x = 3,179,516,934,400/1,272,176
6. Step 6: Final answer
   x = 2,499,274.42