Finding the Third Proportional to 45,815,216 and 64,086,519

Step by Step Solution

1. Step 1: Write the proportion equation
   45,815,216 : 64,086,519 = 64,086,519 : x
2. Step 2: Convert to fraction form
   45,815,216/64,086,519 = 64,086,519/x
3. Step 3: Cross multiply
   45,815,216x = 64,086,519 × 64,086,519
4. Step 4: Simplify right side
   45,815,216x = 4,107,081,917,537,361
5. Step 5: Solve for x
   x = 4,107,081,917,537,361/45,815,216
6. Step 6: Final answer
   x = 89,644,495.35