Finding the Third Proportional to 1,217,058 and 1,909,140

Step by Step Solution

1. Step 1: Write the proportion equation
   1,217,058 : 1,909,140 = 1,909,140 : x
2. Step 2: Convert to fraction form
   1,217,058/1,909,140 = 1,909,140/x
3. Step 3: Cross multiply
   1,217,058x = 1,909,140 × 1,909,140
4. Step 4: Simplify right side
   1,217,058x = 3,644,815,539,600
5. Step 5: Solve for x
   x = 3,644,815,539,600/1,217,058
6. Step 6: Final answer
   x = 2,994,775.55