Finding the Third Proportional to 900,064 and 1,265,880

Step by Step Solution

1. Step 1: Write the proportion equation
   900,064 : 1,265,880 = 1,265,880 : x
2. Step 2: Convert to fraction form
   900,064/1,265,880 = 1,265,880/x
3. Step 3: Cross multiply
   900,064x = 1,265,880 × 1,265,880
4. Step 4: Simplify right side
   900,064x = 1,602,452,174,400
5. Step 5: Solve for x
   x = 1,602,452,174,400/900,064
6. Step 6: Final answer
   x = 1,780,375.81