Finding the Third Proportional to 191,642 and 403,146

Step by Step Solution

1. Step 1: Write the proportion equation
   191,642 : 403,146 = 403,146 : x
2. Step 2: Convert to fraction form
   191,642/403,146 = 403,146/x
3. Step 3: Cross multiply
   191,642x = 403,146 × 403,146
4. Step 4: Simplify right side
   191,642x = 162,526,697,316
5. Step 5: Solve for x
   x = 162,526,697,316/191,642
6. Step 6: Final answer
   x = 848,074.52