Finding the Third Proportional to 191,603.50 and 290,056

Step by Step Solution

1. Step 1: Write the proportion equation
   191,603.50 : 290,056 = 290,056 : x
2. Step 2: Convert to fraction form
   191,603.50/290,056 = 290,056/x
3. Step 3: Cross multiply
   191,603.50x = 290,056 × 290,056
4. Step 4: Simplify right side
   191,603.50x = 84,132,483,136
5. Step 5: Solve for x
   x = 84,132,483,136/191,603.50
6. Step 6: Final answer
   x = 439,096.80