Finding the Third Proportional to 357,942 and 501,718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   357,942 : 501,718.50 = 501,718.50 : x
2. Step 2: Convert to fraction form
   357,942/501,718.50 = 501,718.50/x
3. Step 3: Cross multiply
   357,942x = 501,718.50 × 501,718.50
4. Step 4: Simplify right side
   357,942x = 251,721,453,242.25
5. Step 5: Solve for x
   x = 251,721,453,242.25/357,942
6. Step 6: Final answer
   x = 703,246.48