Finding the Third Proportional to 89,067,138 and 137,910,367

Step by Step Solution

1. Step 1: Write the proportion equation
   89,067,138 : 137,910,367 = 137,910,367 : x
2. Step 2: Convert to fraction form
   89,067,138/137,910,367 = 137,910,367/x
3. Step 3: Cross multiply
   89,067,138x = 137,910,367 × 137,910,367
4. Step 4: Simplify right side
   89,067,138x = 19,019,269,326,074,688
5. Step 5: Solve for x
   x = 19,019,269,326,074,688/89,067,138
6. Step 6: Final answer
   x = 213,538,570.49