Finding the Third Proportional to 366,915.50 and 561,316

Step by Step Solution

1. Step 1: Write the proportion equation
   366,915.50 : 561,316 = 561,316 : x
2. Step 2: Convert to fraction form
   366,915.50/561,316 = 561,316/x
3. Step 3: Cross multiply
   366,915.50x = 561,316 × 561,316
4. Step 4: Simplify right side
   366,915.50x = 315,075,651,856
5. Step 5: Solve for x
   x = 315,075,651,856/366,915.50
6. Step 6: Final answer
   x = 858,714.48