Finding the Third Proportional to 134,316 and 289,615.50

Step by Step Solution

1. Step 1: Write the proportion equation
   134,316 : 289,615.50 = 289,615.50 : x
2. Step 2: Convert to fraction form
   134,316/289,615.50 = 289,615.50/x
3. Step 3: Cross multiply
   134,316x = 289,615.50 × 289,615.50
4. Step 4: Simplify right side
   134,316x = 83,877,137,840.25
5. Step 5: Solve for x
   x = 83,877,137,840.25/134,316
6. Step 6: Final answer
   x = 624,476.14