Finding the Third Proportional to 111,705 and 243,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,705 : 243,066.50 = 243,066.50 : x
2. Step 2: Convert to fraction form
   111,705/243,066.50 = 243,066.50/x
3. Step 3: Cross multiply
   111,705x = 243,066.50 × 243,066.50
4. Step 4: Simplify right side
   111,705x = 59,081,323,422.25
5. Step 5: Solve for x
   x = 59,081,323,422.25/111,705
6. Step 6: Final answer
   x = 528,904.91