Finding the Third Proportional to 18,139,568 and 39,817,632

Step by Step Solution

1. Step 1: Write the proportion equation
   18,139,568 : 39,817,632 = 39,817,632 : x
2. Step 2: Convert to fraction form
   18,139,568/39,817,632 = 39,817,632/x
3. Step 3: Cross multiply
   18,139,568x = 39,817,632 × 39,817,632
4. Step 4: Simplify right side
   18,139,568x = 1,585,443,818,087,424
5. Step 5: Solve for x
   x = 1,585,443,818,087,424/18,139,568
6. Step 6: Final answer
   x = 87,402,512.46