Finding the Third Proportional to 242,140.50 and 478,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   242,140.50 : 478,066.50 = 478,066.50 : x
2. Step 2: Convert to fraction form
   242,140.50/478,066.50 = 478,066.50/x
3. Step 3: Cross multiply
   242,140.50x = 478,066.50 × 478,066.50
4. Step 4: Simplify right side
   242,140.50x = 228,547,578,422.25
5. Step 5: Solve for x
   x = 228,547,578,422.25/242,140.50
6. Step 6: Final answer
   x = 943,863.49