Finding the Third Proportional to 900,280 and 1,380,394

Step by Step Solution

1. Step 1: Write the proportion equation
   900,280 : 1,380,394 = 1,380,394 : x
2. Step 2: Convert to fraction form
   900,280/1,380,394 = 1,380,394/x
3. Step 3: Cross multiply
   900,280x = 1,380,394 × 1,380,394
4. Step 4: Simplify right side
   900,280x = 1,905,487,595,236
5. Step 5: Solve for x
   x = 1,905,487,595,236/900,280
6. Step 6: Final answer
   x = 2,116,549.96