Finding the Third Proportional to 191,587,986 and 419,446,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,587,986 : 419,446,779.50 = 419,446,779.50 : x
2. Step 2: Convert to fraction form
   191,587,986/419,446,779.50 = 419,446,779.50/x
3. Step 3: Cross multiply
   191,587,986x = 419,446,779.50 × 419,446,779.50
4. Step 4: Simplify right side
   191,587,986x = 175,935,600,832,921,632
5. Step 5: Solve for x
   x = 175,935,600,832,921,632/191,587,986
6. Step 6: Final answer
   x = 918,301,844.00