Finding the Third Proportional to 111,698 and 243,054

Step by Step Solution

1. Step 1: Write the proportion equation
   111,698 : 243,054 = 243,054 : x
2. Step 2: Convert to fraction form
   111,698/243,054 = 243,054/x
3. Step 3: Cross multiply
   111,698x = 243,054 × 243,054
4. Step 4: Simplify right side
   111,698x = 59,075,246,916
5. Step 5: Solve for x
   x = 59,075,246,916/111,698
6. Step 6: Final answer
   x = 528,883.66