Finding the Third Proportional to 644,752,877.06 and 1,381,456,432.69

Step by Step Solution

1. Step 1: Write the proportion equation
   644,752,877.06 : 1,381,456,432.69 = 1,381,456,432.69 : x
2. Step 2: Convert to fraction form
   644,752,877.06/1,381,456,432.69 = 1,381,456,432.69/x
3. Step 3: Cross multiply
   644,752,877.06x = 1,381,456,432.69 × 1,381,456,432.69
4. Step 4: Simplify right side
   644,752,877.06x = 1,908,421,875,413,673,216
5. Step 5: Solve for x
   x = 1,908,421,875,413,673,216/644,752,877.06
6. Step 6: Final answer
   x = 2,959,927,661.14