Finding the Third Proportional to 342,069.50 and 536,603

Step by Step Solution

1. Step 1: Write the proportion equation
   342,069.50 : 536,603 = 536,603 : x
2. Step 2: Convert to fraction form
   342,069.50/536,603 = 536,603/x
3. Step 3: Cross multiply
   342,069.50x = 536,603 × 536,603
4. Step 4: Simplify right side
   342,069.50x = 287,942,779,609
5. Step 5: Solve for x
   x = 287,942,779,609/342,069.50
6. Step 6: Final answer
   x = 841,766.89