Finding the Third Proportional to 4,072,239 and 8,426,364

Step by Step Solution

1. Step 1: Write the proportion equation
   4,072,239 : 8,426,364 = 8,426,364 : x
2. Step 2: Convert to fraction form
   4,072,239/8,426,364 = 8,426,364/x
3. Step 3: Cross multiply
   4,072,239x = 8,426,364 × 8,426,364
4. Step 4: Simplify right side
   4,072,239x = 71,003,610,260,496
5. Step 5: Solve for x
   x = 71,003,610,260,496/4,072,239
6. Step 6: Final answer
   x = 17,436,012.54