Finding the Third Proportional to 112,611.50 and 242,678

Step by Step Solution

1. Step 1: Write the proportion equation
   112,611.50 : 242,678 = 242,678 : x
2. Step 2: Convert to fraction form
   112,611.50/242,678 = 242,678/x
3. Step 3: Cross multiply
   112,611.50x = 242,678 × 242,678
4. Step 4: Simplify right side
   112,611.50x = 58,892,611,684
5. Step 5: Solve for x
   x = 58,892,611,684/112,611.50
6. Step 6: Final answer
   x = 522,971.56