Finding the Third Proportional to 611,718,628.50 and 1,320,908,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   611,718,628.50 : 1,320,908,971.50 = 1,320,908,971.50 : x
2. Step 2: Convert to fraction form
   611,718,628.50/1,320,908,971.50 = 1,320,908,971.50/x
3. Step 3: Cross multiply
   611,718,628.50x = 1,320,908,971.50 × 1,320,908,971.50
4. Step 4: Simplify right side
   611,718,628.50x = 1,744,800,510,989,187,840
5. Step 5: Solve for x
   x = 1,744,800,510,989,187,840/611,718,628.50
6. Step 6: Final answer
   x = 2,852,292,589.60