Finding the Third Proportional to 429,742,917 and 920,748,978

Step by Step Solution

1. Step 1: Write the proportion equation
   429,742,917 : 920,748,978 = 920,748,978 : x
2. Step 2: Convert to fraction form
   429,742,917/920,748,978 = 920,748,978/x
3. Step 3: Cross multiply
   429,742,917x = 920,748,978 × 920,748,978
4. Step 4: Simplify right side
   429,742,917x = 847,778,680,488,044,544
5. Step 5: Solve for x
   x = 847,778,680,488,044,544/429,742,917
6. Step 6: Final answer
   x = 1,972,757,774.36