Finding the Third Proportional to 117,111.50 and 260,426

Step by Step Solution

1. Step 1: Write the proportion equation
   117,111.50 : 260,426 = 260,426 : x
2. Step 2: Convert to fraction form
   117,111.50/260,426 = 260,426/x
3. Step 3: Cross multiply
   117,111.50x = 260,426 × 260,426
4. Step 4: Simplify right side
   117,111.50x = 67,821,701,476
5. Step 5: Solve for x
   x = 67,821,701,476/117,111.50
6. Step 6: Final answer
   x = 579,120.77