Finding the Third Proportional to 745,423 and 993,142

Step by Step Solution

1. Step 1: Write the proportion equation
   745,423 : 993,142 = 993,142 : x
2. Step 2: Convert to fraction form
   745,423/993,142 = 993,142/x
3. Step 3: Cross multiply
   745,423x = 993,142 × 993,142
4. Step 4: Simplify right side
   745,423x = 986,331,032,164
5. Step 5: Solve for x
   x = 986,331,032,164/745,423
6. Step 6: Final answer
   x = 1,323,182.99