Finding the Third Proportional to 201,859 and 438,061

Step by Step Solution

1. Step 1: Write the proportion equation
   201,859 : 438,061 = 438,061 : x
2. Step 2: Convert to fraction form
   201,859/438,061 = 438,061/x
3. Step 3: Cross multiply
   201,859x = 438,061 × 438,061
4. Step 4: Simplify right side
   201,859x = 191,897,439,721
5. Step 5: Solve for x
   x = 191,897,439,721/201,859
6. Step 6: Final answer
   x = 950,650.90