Finding the Third Proportional to 693,668,055.50 and 1,618,614,697.50

Step by Step Solution

1. Step 1: Write the proportion equation
   693,668,055.50 : 1,618,614,697.50 = 1,618,614,697.50 : x
2. Step 2: Convert to fraction form
   693,668,055.50/1,618,614,697.50 = 1,618,614,697.50/x
3. Step 3: Cross multiply
   693,668,055.50x = 1,618,614,697.50 × 1,618,614,697.50
4. Step 4: Simplify right side
   693,668,055.50x = 2,619,913,538,963,016,704
5. Step 5: Solve for x
   x = 2,619,913,538,963,016,704/693,668,055.50
6. Step 6: Final answer
   x = 3,776,898,068.45