Finding the Third Proportional to 64,572 and 139,034

Step by Step Solution

1. Step 1: Write the proportion equation
   64,572 : 139,034 = 139,034 : x
2. Step 2: Convert to fraction form
   64,572/139,034 = 139,034/x
3. Step 3: Cross multiply
   64,572x = 139,034 × 139,034
4. Step 4: Simplify right side
   64,572x = 19,330,453,156
5. Step 5: Solve for x
   x = 19,330,453,156/64,572
6. Step 6: Final answer
   x = 299,362.78