Finding the Third Proportional to 191,772 and 300,213

Step by Step Solution

1. Step 1: Write the proportion equation
   191,772 : 300,213 = 300,213 : x
2. Step 2: Convert to fraction form
   191,772/300,213 = 300,213/x
3. Step 3: Cross multiply
   191,772x = 300,213 × 300,213
4. Step 4: Simplify right side
   191,772x = 90,127,845,369
5. Step 5: Solve for x
   x = 90,127,845,369/191,772
6. Step 6: Final answer
   x = 469,973.96