Finding the Third Proportional to 899,870 and 1,265,784

Step by Step Solution

1. Step 1: Write the proportion equation
   899,870 : 1,265,784 = 1,265,784 : x
2. Step 2: Convert to fraction form
   899,870/1,265,784 = 1,265,784/x
3. Step 3: Cross multiply
   899,870x = 1,265,784 × 1,265,784
4. Step 4: Simplify right side
   899,870x = 1,602,209,134,656
5. Step 5: Solve for x
   x = 1,602,209,134,656/899,870
6. Step 6: Final answer
   x = 1,780,489.55