Finding the Third Proportional to 1,148,226 and 1,689,120

Step by Step Solution

1. Step 1: Write the proportion equation
   1,148,226 : 1,689,120 = 1,689,120 : x
2. Step 2: Convert to fraction form
   1,148,226/1,689,120 = 1,689,120/x
3. Step 3: Cross multiply
   1,148,226x = 1,689,120 × 1,689,120
4. Step 4: Simplify right side
   1,148,226x = 2,853,126,374,400
5. Step 5: Solve for x
   x = 2,853,126,374,400/1,148,226
6. Step 6: Final answer
   x = 2,484,812.55