Finding the Third Proportional to 272,308.50 and 591,111

Step by Step Solution

1. Step 1: Write the proportion equation
   272,308.50 : 591,111 = 591,111 : x
2. Step 2: Convert to fraction form
   272,308.50/591,111 = 591,111/x
3. Step 3: Cross multiply
   272,308.50x = 591,111 × 591,111
4. Step 4: Simplify right side
   272,308.50x = 349,412,214,321
5. Step 5: Solve for x
   x = 349,412,214,321/272,308.50
6. Step 6: Final answer
   x = 1,283,148.39