Finding the Third Proportional to 703,426 and 1,089,887

Step by Step Solution

1. Step 1: Write the proportion equation
   703,426 : 1,089,887 = 1,089,887 : x
2. Step 2: Convert to fraction form
   703,426/1,089,887 = 1,089,887/x
3. Step 3: Cross multiply
   703,426x = 1,089,887 × 1,089,887
4. Step 4: Simplify right side
   703,426x = 1,187,853,672,769
5. Step 5: Solve for x
   x = 1,187,853,672,769/703,426
6. Step 6: Final answer
   x = 1,688,668.99