Finding the Third Proportional to 645,582,766.50 and 1,380,920,008.50

Step by Step Solution

1. Step 1: Write the proportion equation
   645,582,766.50 : 1,380,920,008.50 = 1,380,920,008.50 : x
2. Step 2: Convert to fraction form
   645,582,766.50/1,380,920,008.50 = 1,380,920,008.50/x
3. Step 3: Cross multiply
   645,582,766.50x = 1,380,920,008.50 × 1,380,920,008.50
4. Step 4: Simplify right side
   645,582,766.50x = 1,906,940,069,875,640,064
5. Step 5: Solve for x
   x = 1,906,940,069,875,640,064/645,582,766.50
6. Step 6: Final answer
   x = 2,953,827,408.09