Finding the Third Proportional to 111,716 and 243,090

Step by Step Solution

1. Step 1: Write the proportion equation
   111,716 : 243,090 = 243,090 : x
2. Step 2: Convert to fraction form
   111,716/243,090 = 243,090/x
3. Step 3: Cross multiply
   111,716x = 243,090 × 243,090
4. Step 4: Simplify right side
   111,716x = 59,092,748,100
5. Step 5: Solve for x
   x = 59,092,748,100/111,716
6. Step 6: Final answer
   x = 528,955.10