Finding the Third Proportional to 900,229 and 1,380,412

Step by Step Solution

1. Step 1: Write the proportion equation
   900,229 : 1,380,412 = 1,380,412 : x
2. Step 2: Convert to fraction form
   900,229/1,380,412 = 1,380,412/x
3. Step 3: Cross multiply
   900,229x = 1,380,412 × 1,380,412
4. Step 4: Simplify right side
   900,229x = 1,905,537,289,744
5. Step 5: Solve for x
   x = 1,905,537,289,744/900,229
6. Step 6: Final answer
   x = 2,116,725.07