Finding the Third Proportional to 321,468,601.50 and 681,565,185

Step by Step Solution

1. Step 1: Write the proportion equation
   321,468,601.50 : 681,565,185 = 681,565,185 : x
2. Step 2: Convert to fraction form
   321,468,601.50/681,565,185 = 681,565,185/x
3. Step 3: Cross multiply
   321,468,601.50x = 681,565,185 × 681,565,185
4. Step 4: Simplify right side
   321,468,601.50x = 464,531,101,404,084,224
5. Step 5: Solve for x
   x = 464,531,101,404,084,224/321,468,601.50
6. Step 6: Final answer
   x = 1,445,027,910.15