Finding the Third Proportional to 64,564 and 139,502.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,564 : 139,502.50 = 139,502.50 : x
2. Step 2: Convert to fraction form
   64,564/139,502.50 = 139,502.50/x
3. Step 3: Cross multiply
   64,564x = 139,502.50 × 139,502.50
4. Step 4: Simplify right side
   64,564x = 19,460,947,506.25
5. Step 5: Solve for x
   x = 19,460,947,506.25/64,564
6. Step 6: Final answer
   x = 301,421.03