Finding the Third Proportional to 5,426,129 and 8,398,046

Step by Step Solution

1. Step 1: Write the proportion equation
   5,426,129 : 8,398,046 = 8,398,046 : x
2. Step 2: Convert to fraction form
   5,426,129/8,398,046 = 8,398,046/x
3. Step 3: Cross multiply
   5,426,129x = 8,398,046 × 8,398,046
4. Step 4: Simplify right side
   5,426,129x = 70,527,176,618,116
5. Step 5: Solve for x
   x = 70,527,176,618,116/5,426,129
6. Step 6: Final answer
   x = 12,997,696.26