Finding the Third Proportional to 116,621 and 243,598

Step by Step Solution

1. Step 1: Write the proportion equation
   116,621 : 243,598 = 243,598 : x
2. Step 2: Convert to fraction form
   116,621/243,598 = 243,598/x
3. Step 3: Cross multiply
   116,621x = 243,598 × 243,598
4. Step 4: Simplify right side
   116,621x = 59,339,985,604
5. Step 5: Solve for x
   x = 59,339,985,604/116,621
6. Step 6: Final answer
   x = 508,827.62