Finding the Third Proportional to 31,384,584 and 67,578,378

Step by Step Solution

1. Step 1: Write the proportion equation
   31,384,584 : 67,578,378 = 67,578,378 : x
2. Step 2: Convert to fraction form
   31,384,584/67,578,378 = 67,578,378/x
3. Step 3: Cross multiply
   31,384,584x = 67,578,378 × 67,578,378
4. Step 4: Simplify right side
   31,384,584x = 4,566,837,173,110,884
5. Step 5: Solve for x
   x = 4,566,837,173,110,884/31,384,584
6. Step 6: Final answer
   x = 145,512,114.26