Finding the Third Proportional to 784,838 and 1,215,009

Step by Step Solution

1. Step 1: Write the proportion equation
   784,838 : 1,215,009 = 1,215,009 : x
2. Step 2: Convert to fraction form
   784,838/1,215,009 = 1,215,009/x
3. Step 3: Cross multiply
   784,838x = 1,215,009 × 1,215,009
4. Step 4: Simplify right side
   784,838x = 1,476,246,870,081
5. Step 5: Solve for x
   x = 1,476,246,870,081/784,838
6. Step 6: Final answer
   x = 1,880,957.43