Finding the Third Proportional to 30,616 and 64,906

Step by Step Solution

1. Step 1: Write the proportion equation
   30,616 : 64,906 = 64,906 : x
2. Step 2: Convert to fraction form
   30,616/64,906 = 64,906/x
3. Step 3: Cross multiply
   30,616x = 64,906 × 64,906
4. Step 4: Simplify right side
   30,616x = 4,212,788,836
5. Step 5: Solve for x
   x = 4,212,788,836/30,616
6. Step 6: Final answer
   x = 137,600.89