Finding the Third Proportional to 133,254 and 289,116

Step by Step Solution

1. Step 1: Write the proportion equation
   133,254 : 289,116 = 289,116 : x
2. Step 2: Convert to fraction form
   133,254/289,116 = 289,116/x
3. Step 3: Cross multiply
   133,254x = 289,116 × 289,116
4. Step 4: Simplify right side
   133,254x = 83,588,061,456
5. Step 5: Solve for x
   x = 83,588,061,456/133,254
6. Step 6: Final answer
   x = 627,283.69