Finding the Third Proportional to 789,798 and 1,128,630

Step by Step Solution

1. Step 1: Write the proportion equation
   789,798 : 1,128,630 = 1,128,630 : x
2. Step 2: Convert to fraction form
   789,798/1,128,630 = 1,128,630/x
3. Step 3: Cross multiply
   789,798x = 1,128,630 × 1,128,630
4. Step 4: Simplify right side
   789,798x = 1,273,805,676,900
5. Step 5: Solve for x
   x = 1,273,805,676,900/789,798
6. Step 6: Final answer
   x = 1,612,824.64