Finding the Third Proportional to 4,072,434 and 8,042,070

Step by Step Solution

1. Step 1: Write the proportion equation
   4,072,434 : 8,042,070 = 8,042,070 : x
2. Step 2: Convert to fraction form
   4,072,434/8,042,070 = 8,042,070/x
3. Step 3: Cross multiply
   4,072,434x = 8,042,070 × 8,042,070
4. Step 4: Simplify right side
   4,072,434x = 64,674,889,884,900
5. Step 5: Solve for x
   x = 64,674,889,884,900/4,072,434
6. Step 6: Final answer
   x = 15,881,138.87