Finding the Third Proportional to 432,111 and 654,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   432,111 : 654,136.50 = 654,136.50 : x
2. Step 2: Convert to fraction form
   432,111/654,136.50 = 654,136.50/x
3. Step 3: Cross multiply
   432,111x = 654,136.50 × 654,136.50
4. Step 4: Simplify right side
   432,111x = 427,894,560,632.25
5. Step 5: Solve for x
   x = 427,894,560,632.25/432,111
6. Step 6: Final answer
   x = 990,242.23