Finding the Third Proportional to 900,279.56 and 1,380,391.88

Step by Step Solution

1. Step 1: Write the proportion equation
   900,279.56 : 1,380,391.88 = 1,380,391.88 : x
2. Step 2: Convert to fraction form
   900,279.56/1,380,391.88 = 1,380,391.88/x
3. Step 3: Cross multiply
   900,279.56x = 1,380,391.88 × 1,380,391.88
4. Step 4: Simplify right side
   900,279.56x = 1,905,481,728,566.02
5. Step 5: Solve for x
   x = 1,905,481,728,566.02/900,279.56
6. Step 6: Final answer
   x = 2,116,544.47