Finding the Third Proportional to 666,149,843 and 1,443,503,715.50

Step by Step Solution

1. Step 1: Write the proportion equation
   666,149,843 : 1,443,503,715.50 = 1,443,503,715.50 : x
2. Step 2: Convert to fraction form
   666,149,843/1,443,503,715.50 = 1,443,503,715.50/x
3. Step 3: Cross multiply
   666,149,843x = 1,443,503,715.50 × 1,443,503,715.50
4. Step 4: Simplify right side
   666,149,843x = 2,083,702,976,662,305,024
5. Step 5: Solve for x
   x = 2,083,702,976,662,305,024/666,149,843
6. Step 6: Final answer
   x = 3,127,979,385.66