Finding the Third Proportional to 386,547 and 614,956.50

Step by Step Solution

1. Step 1: Write the proportion equation
   386,547 : 614,956.50 = 614,956.50 : x
2. Step 2: Convert to fraction form
   386,547/614,956.50 = 614,956.50/x
3. Step 3: Cross multiply
   386,547x = 614,956.50 × 614,956.50
4. Step 4: Simplify right side
   386,547x = 378,171,496,892.25
5. Step 5: Solve for x
   x = 378,171,496,892.25/386,547
6. Step 6: Final answer
   x = 978,332.51