Finding the Third Proportional to 621,803,025.56 and 1,329,699,477.94

Step by Step Solution

1. Step 1: Write the proportion equation
   621,803,025.56 : 1,329,699,477.94 = 1,329,699,477.94 : x
2. Step 2: Convert to fraction form
   621,803,025.56/1,329,699,477.94 = 1,329,699,477.94/x
3. Step 3: Cross multiply
   621,803,025.56x = 1,329,699,477.94 × 1,329,699,477.94
4. Step 4: Simplify right side
   621,803,025.56x = 1,768,100,701,627,260,160
5. Step 5: Solve for x
   x = 1,768,100,701,627,260,160/621,803,025.56
6. Step 6: Final answer
   x = 2,843,506,108.75