Finding the Third Proportional to 243,411 and 531,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   243,411 : 531,109.50 = 531,109.50 : x
2. Step 2: Convert to fraction form
   243,411/531,109.50 = 531,109.50/x
3. Step 3: Cross multiply
   243,411x = 531,109.50 × 531,109.50
4. Step 4: Simplify right side
   243,411x = 282,077,300,990.25
5. Step 5: Solve for x
   x = 282,077,300,990.25/243,411
6. Step 6: Final answer
   x = 1,158,851.90