Finding the Third Proportional to 100,664 and 272,861.50

Step by Step Solution

1. Step 1: Write the proportion equation
   100,664 : 272,861.50 = 272,861.50 : x
2. Step 2: Convert to fraction form
   100,664/272,861.50 = 272,861.50/x
3. Step 3: Cross multiply
   100,664x = 272,861.50 × 272,861.50
4. Step 4: Simplify right side
   100,664x = 74,453,398,182.25
5. Step 5: Solve for x
   x = 74,453,398,182.25/100,664
6. Step 6: Final answer
   x = 739,622.89