Finding the Third Proportional to 117,112.50 and 260,428

Step by Step Solution

1. Step 1: Write the proportion equation
   117,112.50 : 260,428 = 260,428 : x
2. Step 2: Convert to fraction form
   117,112.50/260,428 = 260,428/x
3. Step 3: Cross multiply
   117,112.50x = 260,428 × 260,428
4. Step 4: Simplify right side
   117,112.50x = 67,822,743,184
5. Step 5: Solve for x
   x = 67,822,743,184/117,112.50
6. Step 6: Final answer
   x = 579,124.71