Finding the Third Proportional to 191,788 and 300,859

Step by Step Solution

1. Step 1: Write the proportion equation
   191,788 : 300,859 = 300,859 : x
2. Step 2: Convert to fraction form
   191,788/300,859 = 300,859/x
3. Step 3: Cross multiply
   191,788x = 300,859 × 300,859
4. Step 4: Simplify right side
   191,788x = 90,516,137,881
5. Step 5: Solve for x
   x = 90,516,137,881/191,788
6. Step 6: Final answer
   x = 471,959.34