Finding the Third Proportional to 1,211,580 and 1,881,288

Step by Step Solution

1. Step 1: Write the proportion equation
   1,211,580 : 1,881,288 = 1,881,288 : x
2. Step 2: Convert to fraction form
   1,211,580/1,881,288 = 1,881,288/x
3. Step 3: Cross multiply
   1,211,580x = 1,881,288 × 1,881,288
4. Step 4: Simplify right side
   1,211,580x = 3,539,244,538,944
5. Step 5: Solve for x
   x = 3,539,244,538,944/1,211,580
6. Step 6: Final answer
   x = 2,921,181.05