Finding the Third Proportional to 17,916,636 and 39,186,360

Step by Step Solution

1. Step 1: Write the proportion equation
   17,916,636 : 39,186,360 = 39,186,360 : x
2. Step 2: Convert to fraction form
   17,916,636/39,186,360 = 39,186,360/x
3. Step 3: Cross multiply
   17,916,636x = 39,186,360 × 39,186,360
4. Step 4: Simplify right side
   17,916,636x = 1,535,570,810,049,600
5. Step 5: Solve for x
   x = 1,535,570,810,049,600/17,916,636
6. Step 6: Final answer
   x = 85,706,424.47