Finding the Third Proportional to 401,773.50 and 607,843.50

Step by Step Solution

1. Step 1: Write the proportion equation
   401,773.50 : 607,843.50 = 607,843.50 : x
2. Step 2: Convert to fraction form
   401,773.50/607,843.50 = 607,843.50/x
3. Step 3: Cross multiply
   401,773.50x = 607,843.50 × 607,843.50
4. Step 4: Simplify right side
   401,773.50x = 369,473,720,492.25
5. Step 5: Solve for x
   x = 369,473,720,492.25/401,773.50
6. Step 6: Final answer
   x = 919,606.99