Finding the Third Proportional to 39,856,464 and 82,893,878

Step by Step Solution

1. Step 1: Write the proportion equation
   39,856,464 : 82,893,878 = 82,893,878 : x
2. Step 2: Convert to fraction form
   39,856,464/82,893,878 = 82,893,878/x
3. Step 3: Cross multiply
   39,856,464x = 82,893,878 × 82,893,878
4. Step 4: Simplify right side
   39,856,464x = 6,871,395,009,878,884
5. Step 5: Solve for x
   x = 6,871,395,009,878,884/39,856,464
6. Step 6: Final answer
   x = 172,403,528.07