Finding the Third Proportional to 308,984 and 478,177.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,984 : 478,177.50 = 478,177.50 : x
2. Step 2: Convert to fraction form
   308,984/478,177.50 = 478,177.50/x
3. Step 3: Cross multiply
   308,984x = 478,177.50 × 478,177.50
4. Step 4: Simplify right side
   308,984x = 228,653,721,506.25
5. Step 5: Solve for x
   x = 228,653,721,506.25/308,984
6. Step 6: Final answer
   x = 740,018.00