Finding the Third Proportional to 168,061.50 and 361,611

Step by Step Solution

1. Step 1: Write the proportion equation
   168,061.50 : 361,611 = 361,611 : x
2. Step 2: Convert to fraction form
   168,061.50/361,611 = 361,611/x
3. Step 3: Cross multiply
   168,061.50x = 361,611 × 361,611
4. Step 4: Simplify right side
   168,061.50x = 130,762,515,321
5. Step 5: Solve for x
   x = 130,762,515,321/168,061.50
6. Step 6: Final answer
   x = 778,063.48