Finding the Third Proportional to 645,763 and 902,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   645,763 : 902,812.50 = 902,812.50 : x
2. Step 2: Convert to fraction form
   645,763/902,812.50 = 902,812.50/x
3. Step 3: Cross multiply
   645,763x = 902,812.50 × 902,812.50
4. Step 4: Simplify right side
   645,763x = 815,070,410,156.25
5. Step 5: Solve for x
   x = 815,070,410,156.25/645,763
6. Step 6: Final answer
   x = 1,262,181.96