Finding the Third Proportional to 5,514,888 and 8,278,168

Step by Step Solution

1. Step 1: Write the proportion equation
   5,514,888 : 8,278,168 = 8,278,168 : x
2. Step 2: Convert to fraction form
   5,514,888/8,278,168 = 8,278,168/x
3. Step 3: Cross multiply
   5,514,888x = 8,278,168 × 8,278,168
4. Step 4: Simplify right side
   5,514,888x = 68,528,065,436,224
5. Step 5: Solve for x
   x = 68,528,065,436,224/5,514,888
6. Step 6: Final answer
   x = 12,426,012.18