Finding the Third Proportional to 641,199 and 996,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   641,199 : 996,799.50 = 996,799.50 : x
2. Step 2: Convert to fraction form
   641,199/996,799.50 = 996,799.50/x
3. Step 3: Cross multiply
   641,199x = 996,799.50 × 996,799.50
4. Step 4: Simplify right side
   641,199x = 993,609,243,200.25
5. Step 5: Solve for x
   x = 993,609,243,200.25/641,199
6. Step 6: Final answer
   x = 1,549,611.34