Finding the Third Proportional to 199,316 and 291,300

Step by Step Solution

1. Step 1: Write the proportion equation
   199,316 : 291,300 = 291,300 : x
2. Step 2: Convert to fraction form
   199,316/291,300 = 291,300/x
3. Step 3: Cross multiply
   199,316x = 291,300 × 291,300
4. Step 4: Simplify right side
   199,316x = 84,855,690,000
5. Step 5: Solve for x
   x = 84,855,690,000/199,316
6. Step 6: Final answer
   x = 425,734.46