Finding the Third Proportional to 53,316 and 123,428.25

Step by Step Solution

1. Step 1: Write the proportion equation
   53,316 : 123,428.25 = 123,428.25 : x
2. Step 2: Convert to fraction form
   53,316/123,428.25 = 123,428.25/x
3. Step 3: Cross multiply
   53,316x = 123,428.25 × 123,428.25
4. Step 4: Simplify right side
   53,316x = 15,234,532,898.06
5. Step 5: Solve for x
   x = 15,234,532,898.06/53,316
6. Step 6: Final answer
   x = 285,740.36