Finding the Third Proportional to 5,426,112 and 8,398,020

Step by Step Solution

1. Step 1: Write the proportion equation
   5,426,112 : 8,398,020 = 8,398,020 : x
2. Step 2: Convert to fraction form
   5,426,112/8,398,020 = 8,398,020/x
3. Step 3: Cross multiply
   5,426,112x = 8,398,020 × 8,398,020
4. Step 4: Simplify right side
   5,426,112x = 70,526,739,920,400
5. Step 5: Solve for x
   x = 70,526,739,920,400/5,426,112
6. Step 6: Final answer
   x = 12,997,656.50