Finding the Third Proportional to 641,280 and 901,948.50

Step by Step Solution

1. Step 1: Write the proportion equation
   641,280 : 901,948.50 = 901,948.50 : x
2. Step 2: Convert to fraction form
   641,280/901,948.50 = 901,948.50/x
3. Step 3: Cross multiply
   641,280x = 901,948.50 × 901,948.50
4. Step 4: Simplify right side
   641,280x = 813,511,096,652.25
5. Step 5: Solve for x
   x = 813,511,096,652.25/641,280
6. Step 6: Final answer
   x = 1,268,573.94