Finding the Third Proportional to 1,148,220 and 1,689,111

Step by Step Solution

1. Step 1: Write the proportion equation
   1,148,220 : 1,689,111 = 1,689,111 : x
2. Step 2: Convert to fraction form
   1,148,220/1,689,111 = 1,689,111/x
3. Step 3: Cross multiply
   1,148,220x = 1,689,111 × 1,689,111
4. Step 4: Simplify right side
   1,148,220x = 2,853,095,970,321
5. Step 5: Solve for x
   x = 2,853,095,970,321/1,148,220
6. Step 6: Final answer
   x = 2,484,799.05