Finding the Third Proportional to 64,682.50 and 139,201

Step by Step Solution

1. Step 1: Write the proportion equation
   64,682.50 : 139,201 = 139,201 : x
2. Step 2: Convert to fraction form
   64,682.50/139,201 = 139,201/x
3. Step 3: Cross multiply
   64,682.50x = 139,201 × 139,201
4. Step 4: Simplify right side
   64,682.50x = 19,376,918,401
5. Step 5: Solve for x
   x = 19,376,918,401/64,682.50
6. Step 6: Final answer
   x = 299,569.72