Finding the Third Proportional to 133,075.50 and 291,915

Step by Step Solution

1. Step 1: Write the proportion equation
   133,075.50 : 291,915 = 291,915 : x
2. Step 2: Convert to fraction form
   133,075.50/291,915 = 291,915/x
3. Step 3: Cross multiply
   133,075.50x = 291,915 × 291,915
4. Step 4: Simplify right side
   133,075.50x = 85,214,367,225
5. Step 5: Solve for x
   x = 85,214,367,225/133,075.50
6. Step 6: Final answer
   x = 640,346.02