Finding the Third Proportional to 870,834 and 1,319,388

Step by Step Solution

1. Step 1: Write the proportion equation
   870,834 : 1,319,388 = 1,319,388 : x
2. Step 2: Convert to fraction form
   870,834/1,319,388 = 1,319,388/x
3. Step 3: Cross multiply
   870,834x = 1,319,388 × 1,319,388
4. Step 4: Simplify right side
   870,834x = 1,740,784,694,544
5. Step 5: Solve for x
   x = 1,740,784,694,544/870,834
6. Step 6: Final answer
   x = 1,998,985.68