Finding the Third Proportional to 31,239,118 and 67,851,516

Step by Step Solution

1. Step 1: Write the proportion equation
   31,239,118 : 67,851,516 = 67,851,516 : x
2. Step 2: Convert to fraction form
   31,239,118/67,851,516 = 67,851,516/x
3. Step 3: Cross multiply
   31,239,118x = 67,851,516 × 67,851,516
4. Step 4: Simplify right side
   31,239,118x = 4,603,828,223,498,256
5. Step 5: Solve for x
   x = 4,603,828,223,498,256/31,239,118
6. Step 6: Final answer
   x = 147,373,822.25