Finding the Third Proportional to 64,730 and 139,864

Step by Step Solution

1. Step 1: Write the proportion equation
   64,730 : 139,864 = 139,864 : x
2. Step 2: Convert to fraction form
   64,730/139,864 = 139,864/x
3. Step 3: Cross multiply
   64,730x = 139,864 × 139,864
4. Step 4: Simplify right side
   64,730x = 19,561,938,496
5. Step 5: Solve for x
   x = 19,561,938,496/64,730
6. Step 6: Final answer
   x = 302,208.23